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New‑Generation Ferroelectric AlScN Materials

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Nano-Micro Letters 2024年第11期16卷 88-118页

作者： Yalong Zhang Qiuxiang Zhu bobo Tian Chungang duan Key Laboratory of Polar Materials and Devices Ministry of EducationShanghai Center of Brain‑Inspired Intelligent Materials and DevicesDepartment of ElectronicsEast China Normal UniversityShanghai 200241People’s Republic of China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006ShanxiPeople’s Republic of China

Ferroelectrics have great potential in the field of nonvolatile memory due to programmable polarization states by external electric field in nonvolatile ***,complementary metal oxide semiconductor compatibility and uniformity of ferroelectric performance after size scaling have always been two thorny issues hindering practical application of ferroelectric memory *** emerging ferroelectricity of wurtzite structure nitride offers opportunities to circumvent the *** review covers the mechanism of ferroelectricity and domain dynamics in ferroelectric AlScN *** performance optimization of AlScN films grown by different techniques is summarized and their applications for memories and emerging in-memory computing are ***,the challenges and perspectives regarding the commercial avenue of ferroelectric AlScN are discussed.

关键词： AlScN Ferroelectrics Nonvolatile memory In-memory computing

Freestanding metal nanohole array for high-performance applications

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Photonics Research 2020年第11期8卷 1749-1756页

作者： bobo du Yinlan Ruan Dexing Yang Peipei Jia Shoufei Gao Yingying Wang Pu Wang Heike Ebendorff-Heidepriem MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and Shaanxi Key Laboratory of Optical lnformationTechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710072China Institute for Photonics and Advanced Sensing University of AdelaideAdelaideSA 5005Australia ARC Centre of Excellence for Nanoscale BioPhotonics University of AdelaideAdelaideSA 5005Australia Institute of Photonics Technology Jinan UniversityGuangzhou 510632China Institute of Laser Engineering Beijing University of TechnologyBeijing 100124China

Plasmonic devices using periodic metallic nanostructures have recently gained tremendous interest for color filters,sensing,surface enhanced spectroscopy,and enhanced photoluminescence,***,the performance of such plasmonic devices is severely hampered by the solid substrates supporting the metallic ***,a strategy for freestanding metallic nanomembranes is introduced by taking advantages of hollow substrate ***-area and highly uniform gold nanomembranes with nanohole array are fabricated via a flexible and simple replication-releasing *** hollow structures include a hollow core fiber with 30μm core diameter and two ferrules with their hole diameter as 125 and 500μm,*** a proof-of-concept demonstration,2 times higher sensitivity of the bulk refractive index is obtained with this platform compared to that of a counterpart on a solid silica *** a portable and compact configuration provides unique opportunities to explore the intrinsic properties of the metal nanomembranes and paves a new way to fabricate high-performance plasmonic devices for biomolecule sensing and color filter.

关键词： performance metallic high

Recent Advances in Biomass-derived Porous Carbon Materials:Synthesis,Composition and Applications

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Chemical Research in Chinese Universities 2024年第1期40卷 3-19页

作者： ZHAI Ziqi LU Yumiao LIU Guangyong DING Wei-Lu CAO bobo HE Hongyan CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial TechnologyZhengzhou 450000P.R.China

Porous carbon materials(PCMs)play a pivotal role in diverse applications,such as energy storage,adsorption,catalysis,environmental remediation,and microwave *** selection of carbon precursors,in particular,is crucial for tailoring porous structures with specific ***,with its rich carbon feedstock,abundant availability,renewability,and versatile structures,has emerged as a promising precursor for porous carbon material *** review comprehensively summarizes the recent advances in biomass-derived porous carbon materials(BPCMs)encompassing synthetic strategy,morphology,structural composition,and multiple *** first review synthetic approaches aiming at regulating porosity,followed by morphological and composition features of BPCMs,with a special emphasis on elucidating the dimensional clarification and heteroatom doping *** discussion then extends to the wide-ranging applications of BPCMs,covering energy-related applications and CO_(2) adsorption to environmental ***,the review outlines the existing challenges and prospects in the *** summary,this review systematically describes BPCMs and provides valuable guidance for researchers to select and synthesize BPCMs that meet specific functional requirements.

关键词： Biomass Porous carbon Pyrolysis Heteroatom-doping Supercapacitor CO_(2)adsorption

Direct observation of ordered-disordered structural transition of MoS_(2)-confined ionic liquids

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Chinese Journal of Chemical Engineering 2024年第8期72卷 126-132页

作者： Yumiao Lu Weilu Ding Kun Li Yanlei Wang bobo Cao Ruirui He Hongyan He CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Mesoscience and EngineeringBeijing Key Laboratory of Ionic Liquids Clean ProcessInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Longzihu New Energy Laboratory Zhengzhou Institute of Emerging Industrial TechnologyZhengzhou 450000China

Ionic liquids(ILs)are an emerging class of media of fundamental importance for chemical engineering,especially due to their interaction with solid ***,we explore the growth phenomenon of surface-confined ILs and reveal a peculiar structural transition behavior from order to disorder above a threshold *** behavior can be explained by the variation of interfacial forces with increasing distance from the solid *** structural observation of different ILs highlights the influence of the ionic structure on the growth ***,the length of the alkyl chain in the cation is found to be a determining factor for the ordering ***,the thermal stability of surface-confined ILs is investigated in depth by controlling annealing *** is found that the ordered monolayer ILs exhibit high robustness against high *** findings provide new perspectives on the properties of surface-confined ILs and open up potential avenues for manipulating the structures of nanometer-thick IL films for various applications.

关键词： Ionic liquids(ILs) Surface-confined ILs Structural transition Thermal stability Interfacial forces

A Practical Regular LDPC Coded Scheme for Physical-Layer Information Security

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China Communications 2024年第5期21卷 190-201页

作者： du Junyi CETC Key Laboratory of Avionic Information System Southwest China Institute of Electronic TechnologyChengdu 610036China

In this paper,we aim to design a practical low complexity low-density parity-check(LDPC)coded scheme to build a secure open channel and protect information from *** this end,we first propose a punctured LDPC coded scheme,where the information bits in a codeword are punctured and only the parity check bits are transmitted to the *** further propose a notion of check node type distribution and derive multi-edge type extrinsic information transfer functions to estimate the security performance,instead of the well-known weak metric bit error *** optimize the check node type distribution in terms of the signal-to-noise ratio(SNR)gap and modify the progressive edge growth algorithm to design finite-length *** results show that our proposed scheme can achieve a lower computational complexity and a smaller security gap,compared to the existing scrambling and puncturing schemes.

关键词： extrinsic information transfer function physical layer scheme secure open channel security gap

Transformer and GAN-Based Super-Resolution Reconstruction Network for Medical Images

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Tsinghua Science and Technology 2024年第1期29卷 197-206页

作者： Weizhi du Shihao Tian Arts&Sciences College Washington University in St.LouisSt.LouisMO 63130USA Department of Electric and Computing Engineering Cornell UniversityIthacaNY 14850USA

Super-resolution reconstruction in medical imaging has become more demanding due to the necessity of obtaining high-quality images with minimal radiation dose,such as in low-field magnetic resonance imaging(MRI).However,image super-resolution reconstruction remains a difficult task because of the complexity and high textual requirements for diagnosis *** this paper,we offer a deep learning based strategy for reconstructing medical images from low resolutions utilizing Transformer and generative adversarial networks(T-GANs).The integrated system can extract more precise texture information and focus more on important locations through global image matching after successfully inserting Transformer into the generative adversarial network for picture ***,we weighted the combination of content loss,adversarial loss,and adversarial feature loss as the final multi-task loss function during the training of our proposed model *** comparison to established measures like peak signal-to-noise ratio(PSNR)and structural similarity index measure(SSIM),our suggested T-GAN achieves optimal performance and recovers more texture features in super-resolution reconstruction of MRI scanned images of the knees and belly.

关键词： super-resolution image reconstruction Transformer generative adversarial network(GAN)

Energy consumption simulations of rural residential buildings considering differences in energy use behavior among family members

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Building Simulation 2024年第8期17卷 1335-1358页

作者： Xi Luo Lina du School of Building Services Science and Engineering Xi'an University of Architecture and Technology(XAUAT)Xi'an 710055China State Key Laboratory of Green Building Xi'an 710055China

The“average occupant”methodology is widely used in energy consumption simulations of residential buildings;however,it fails to consider the differences in energy use behavior among family *** on a field survey on the Central Shaanxi Plain,to identify the energy use behavior patterns of typical families,a stochastic energy use behavior model considering differences in energy use behavior among family members was proposed,to improve the accuracy of energy consumption simulations of residential *** results indicated that the surveyed rural families could be classified into the following four types depending on specific energy use behavior patterns:families of one elderly couple,families of one middle-aged couple,families of one elderly couple and one child,and families of one couple and one ***,on typical summer days,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 25.39%and 28%lower than the simulation results obtained by the model proposed in this study for families of one elderly couple and families of one middle-aged couple,and 13.05%and 23.05%higher for families of one elderly couple and one child,and families of one couple and one *** typical winter days,for the four types of families,the results of daily building energy consumption simulation obtained by the“average occupant”methodology were 21.69%,10.84%,1.21%,and 8.39%lower than the simulation results obtained by the model proposed in this study,respectively.

关键词： typical energy use behavior pattern differences in occupant behavior building energy consumption simulation stochastic energy use behavior simulation

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基于BIM的曲面玻璃穹顶深化设计研究

施工技术（中英文） 2023年第5期52卷 61-64页

作者：杜波波江西省新宇建设工程有限公司江西南昌330000

将某商业综合体项目5层屋面设置为双曲椭圆球体曲面玻璃穹顶,依据初始施工图设计文件建立BIM模型,结合施工条件,深化混凝土结构和钢结构,通过优化玻璃安装节点、调整分隔缝,进行曲面校正和复核,并采用广联达进行可视化施工交底,最后根... 详细信息

将某商业综合体项目5层屋面设置为双曲椭圆球体曲面玻璃穹顶,依据初始施工图设计文件建立BIM模型,结合施工条件,深化混凝土结构和钢结构,通过优化玻璃安装节点、调整分隔缝,进行曲面校正和复核,并采用广联达进行可视化施工交底,最后根据混凝土结构检验BIM模型深化设计是否达到最优,特别是在玻璃板块设计中,将68块双曲面玻璃优化为125块折线形平板玻璃+7块曲面玻璃,在取得较接近的外形效果前提下,保障建筑效果,提升施工质量,有效推进施工进度。

关键词：钢结构穹顶分格缝玻璃建筑信息模型

Legal framework for the sharing of pathogens:Issues and recommendations

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Journal of Biosafety and Biosecurity 2024年第1期6卷 27-33页

作者： bobo Liu Cui Huang Jingcheng Wu Tianchan Yi Zhiming Yuan Wuhan Institute of Virology Chinese Academy of SciencesWuhanHubei 430071China Wuhan Documentation and Information Center Chinese Academy of SciencesWuhanHubei 430071China Department of Health Science Technology and EducationNational Health Commission of the People’s Republic of ChinaBeijing 100088China School of Information Management Central China Normal UniversityWuhanHubei 430079China

The sharing of pathogens is of great significance for the continuous and comprehensive testing and monitoring of viral samples,vaccine and drug development,and the study of drug resistance and mutability of viral *** paper reviews the current legal framework in the field of pathogen sharing,analyzes existing issues,and proposes recommendations to improve the legal framework of pathogen sharing.

关键词： Pathogen sharing Access and benefit sharing International law